A novel pressure sensor using eddy current principle for Harsh environment

Gobi, K.; Kannapiran, B.; Devaraj, D.

doi:10.1109/itcosp.2017.8303142

Cited by 1 publication

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diaphragm design discussed in Gobi et al (2017a, 2017b, 2017c) is used to fabricate and evaluate the proposed pressure sensor using ECDS. The rated pressure is taken as 6.8947 MPa.…”

Section: Design Aspects Of Pressure Sensor Using Eddy Current Displacement Sensing Coilmentioning

confidence: 99%

“…Capacitive and optical methods are not suitable, as the parameter of interest is transient in harsh environment. The feasibility of development of pressure sensor using magnetic field sensing method and eddy current sensing method has been discussed (Gobi et al , 2017a, 2017b, 2017c). The non-contact eddy current sensing technique used for pressure measurement in high temperature environment has been discussed (Bogue, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design, development and performance evaluation of pressure sensor using eddy current displacement sensing coil

Gobi¹,

Kannapiran²,

Devaraj³

et al. 2018

View full text Add to dashboard Buy / Rent full text

Purpose The conventional strain gauge type pressure sensor suffers in static testing of engines due to the contact transduction method. This paper aims to focus on the concept of non-contact transduction-based pressure sensor using eddy current displacement sensing coil (ECDS) to overcome the temperature limitations of the strain gauge type pressure sensor. This paper includes the fabrication of prototypes of the proposed pressure sensor and its performance evaluation by static calibration. The fabricated pressure sensor is proposed to measure pressure in static test environment for a short period in the order of few seconds. The limitations of the fabricated pressure sensor related to temperature problems are highlighted and the suitable design changes are recommended to aid the future design. Design/methodology/approach The design of ECDS-based pressure sensor is aimed to provide non-contact transduction to overcome the limitations of the strain gauge type of pressure sensor. The ECDS is designed and fabricated with two configurations to measure deflection of the diaphragm corresponding to the applied pressure. The fabricated ECDS is calibrated using a standard micro meter to ensure transduction within limits. The fabricated prototypes of pressure sensors are calibrated using dead weight tester, and the calibration results are analyzed to select the best configuration. The proposed pressure sensor is tested at different temperatures, and the test results are analyzed to provide recommendations to overcome the shortcomings. Findings The performance of the different configurations of the pressure sensor using ECDS is evaluated using the calibration data. The analysis of the calibration results indicates that the pressure sensor using ECDS (coil-B) with the diaphragm as target is the best configuration. The accuracy of the fabricated pressure sensor with best configuration is ±2.8 per cent and the full scale (FS) output is 3.8 KHz. The designed non-contact transduction method extends the operating temperature of the pressure sensor up to 150°C with the specified accuracy for the short period. Originality/value Most studies of eddy current sensing coil focus on the displacement and position measurement but not on the pressure measurement. This paper is concerned with the design of the pressure sensor using ECDS to realize the non-contact transduction to overcome the limitations of strain gauge type pressure sensors and evaluation of the fabricated prototypes. It is shown that the accuracy of the proposed pressure sensor is not affected by the high temperature for the short period due to non-contact transduction using ECDS.

show abstract

“…The diaphragm design discussed in Gobi et al (2017a, 2017b, 2017c) is used to fabricate and evaluate the proposed pressure sensor using ECDS. The rated pressure is taken as 6.8947 MPa.…”

Section: Design Aspects Of Pressure Sensor Using Eddy Current Displacement Sensing Coilmentioning

confidence: 99%